分母是33的最简真分数有几个

Question

如题所述

Answer 1

真分数就是小于1的分数，最简就是不能再约分的分数。

33是合数,33=3×11
所以1～33中所有3、11的倍数做为分子都不是最简分数。
分母是33的最简真分数有:
1/33, 2/33, 4/33, 5/33,7/33, 8/33, 10/33, 13/33,

14/33, 16/33, 17/33, 19/33, 20/33, 23/33, 25/33,

26/33, 28/33, 29/33, 31/33, 32/33 .一共20个!

关键:分子3,6,9,12,15,18,21,24,27,30,33是3的倍数,11,22,33是11的倍数,33只取一次,就是20个
呵呵,重要是要学会这种方法哦!加油.

Answer 2

1/33,2/33,4/33,5/33,7/33,8/33,10/33,11/33,13/33
14/33,16/33,17/33,19/33,20/33,22/33,23/33,25/33,
26/33,28/33,29/33,31/33,32/33

分母是33的最简真分数共有22个

Answer 3

20个。
在真分数的情况下，除分子为3，6，9，12，15，18，21，24，27，30，11，22，

Answer 4

1/33, 2/33, 4/33, 5/33,7/33, 8/33, 10/33, 13/33,

14/33, 16/33, 17/33, 19/33, 20/33, 23/33, 25/33,

26/33, 28/33, 29/33, 31/33, 32/33

Answer 5

1,2,4,5,7,8,10,11,13,14,16,17,19,20,22,23,25,26,28,29,31,32

22个本回答被提问者采纳